This app supports generating, saving, loading, parsing and verifying Android key and ID attestation data. The app is used for self-testing and diagnostic purposes. While it can function offline using embedded (bundled) revocation data, it also supports updating certificate revocation status online from official Google servers to ensure the most accurate security results. If the system is compromised, parsing and verifying is not safe, you should save the data to a file and then load the file on another device to verify it. This app also supports loading certificate chain generated by other software.